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Zi Yan dce3e7c400 mm/memory_hotplug: use pfn math in place of direct struct page manipulation 
commit 1640a0ef80f6d572725f5b0330038c18e98ea168 upstream.

When dealing with hugetlb pages, manipulating struct page pointers
directly can get to wrong struct page, since struct page is not guaranteed
to be contiguous on SPARSEMEM without VMEMMAP.  Use pfn calculation to
handle it properly.

Without the fix, a wrong number of page might be skipped. Since skip cannot be
negative, scan_movable_page() will end early and might miss a movable page with
-ENOENT. This might fail offline_pages(). No bug is reported. The fix comes
from code inspection.

Link: https://lkml.kernel.org/r/20230913201248.452081-4-zi.yan@sent.com
Fixes: eeb0efd071d8 ("mm,memory_hotplug: fix scan_movable_pages() for gigantic hugepages")
Signed-off-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Muchun Song <songmuchun@bytedance.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Mike Kravetz <mike.kravetz@oracle.com>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: <stable@vger.kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-11-28 16:54:58 +00:00
..
kasan
kasan: print the original fault addr when access invalid shadow
2023-11-08 17:30:43 +01:00
backing-dev.c
writeback, cgroup: remove extra percpu_ref_exit()
2023-05-30 12:57:56 +01:00
balloon_compaction.c
…
cleancache.c
…
cma_debug.c
debugfs: make sure we can remove u32_array files cleanly
2020-07-10 13:54:00 -07:00
cma.c
mm/cma: use nth_page() in place of direct struct page manipulation
2023-11-28 16:54:58 +00:00
cma.h
mm: cma: use CMA_MAX_NAME to define the length of cma name array
2020-09-01 09:19:43 +02:00
compaction.c
mm, compaction: fix fast_isolate_around() to stay within boundaries
2023-01-14 10:16:27 +01:00
debug_page_ref.c
…
debug_vm_pgtable.c
mm/debug_vm_pgtable: remove pte entry from the page table
2022-02-08 18:30:35 +01:00
debug.c
mm, dump_page: rename head_mapcount() --> head_compound_mapcount()
2020-10-13 18:38:29 -07:00
dmapool.c
mm/dmapool.c: replace hard coded function name with __func__
2020-10-13 18:38:32 -07:00
early_ioremap.c
…
fadvise.c
mm, fadvise: improve the expensive remote LRU cache draining after FADV_DONTNEED
2020-10-13 18:38:29 -07:00
failslab.c
…
filemap.c
mm/filemap: fix infinite loop in generic_file_buffered_read()
2023-09-23 11:01:10 +02:00
frame_vector.c
media: vb2: frame_vector.c: replace WARN_ONCE with a comment
2023-10-10 21:53:33 +02:00
frontswap.c
mm/frontswap: mark various intentional data races
2020-08-14 19:56:56 -07:00
gup_benchmark.c
mm/gup_benchmark: take the mmap lock around GUP
2020-10-18 09:27:09 -07:00
gup.c
mm/migration: return errno when isolate_huge_page failed
2023-02-15 17:22:21 +01:00
highmem.c
mm/highmem.c: clean up endif comments
2020-10-16 11:11:18 -07:00
hmm.c
mm/hmm.c: allow VM_MIXEDMAP to work with hmm_range_fault
2022-01-27 10:54:36 +01:00
huge_memory.c
mm/userfaultfd: propagate uffd-wp bit when PTE-mapping the huge zeropage
2023-03-22 13:30:04 +01:00
hugetlb_cgroup.c
hugetlb_cgroup: fix imbalanced css_get and css_put pair for shared mappings
2021-03-30 14:31:54 +02:00
hugetlb.c
mm/migration: return errno when isolate_huge_page failed
2023-02-15 17:22:21 +01:00
hwpoison-inject.c
mm,hwpoison-inject: don't pin for hwpoison_filter
2020-10-16 11:11:16 -07:00
init-mm.c
mm/gup: prevent gup_fast from racing with COW during fork
2020-12-30 11:53:54 +01:00
internal.h
mm/thp: fix vma_address() if virtual address below file offset
2021-06-30 08:47:27 -04:00
interval_tree.c
…
ioremap.c
mm: move p?d_alloc_track to separate header file
2020-08-07 11:33:26 -07:00
Kconfig
mm/zsmalloc.c: drop ZSMALLOC_PGTABLE_MAPPING
2020-12-06 10:19:07 -08:00
Kconfig.debug
treewide: replace '---help---' in Kconfig files with 'help'
2020-06-14 01:57:21 +09:00
khugepaged.c
mm/khugepaged: check again on anon uffd-wp during isolation
2023-04-26 11:27:38 +02:00
kmemleak.c
Revert "mm: kmemleak: take a full lowmem check in kmemleak_*_phys()"
2022-09-15 11:32:02 +02:00
ksm.c
ksm: fix potential missing rmap_item for stable_node
2021-05-19 10:13:07 +02:00
list_lru.c
mm: list_lru: set shrinker map bit when child nr_items is not zero
2020-12-06 10:19:07 -08:00
maccess.c
maccess: Fix writing offset in case of fault in strncpy_from_kernel_nofault()
2022-11-25 17:45:53 +01:00
madvise.c
mm: fix madivse_pageout mishandling on non-LRU page
2022-10-05 10:38:40 +02:00
Makefile
mm,kmemleak-test.c: move kmemleak-test.c to samples dir
2020-10-13 18:38:27 -07:00
mapping_dirty_helpers.c
…
memblock.c
Revert "mm: Always release pages to the buddy allocator in memblock_free_late()."
2023-02-22 12:55:56 +01:00
memcontrol.c
mm: memcontrol: deprecate charge moving
2023-03-11 16:40:04 +01:00
memfd.c
memfd: check for non-NULL file_seals in memfd_create() syscall
2023-06-28 10:28:09 +02:00
memory_hotplug.c
mm/memory_hotplug: use pfn math in place of direct struct page manipulation
2023-11-28 16:54:58 +00:00
memory-failure.c
mm,hwpoison: fix printing of page flags
2023-08-30 16:23:20 +02:00
memory.c
mm/memory: add non-anonymous page check in the copy_present_page()
2022-11-03 23:57:50 +09:00
mempolicy.c
migrate: hugetlb: check for hugetlb shared PMD in node migration
2023-02-15 17:22:21 +01:00
mempool.c
mm/mempool: add 'else' to split mutually exclusive case
2020-10-13 18:38:34 -07:00
memremap.c
mm/memremap.c: map FS_DAX device memory as decrypted
2022-11-16 09:57:17 +01:00
memtest.c
…
migrate.c
mm/migration: return errno when isolate_huge_page failed
2023-02-15 17:22:21 +01:00
mincore.c
mm: factor find_get_incore_page out of mincore_page
2020-10-13 18:38:29 -07:00
mlock.c
mlock: fix unevictable_pgs event counts on THP
2020-09-19 13:13:38 -07:00
mm_init.c
mm: adjust vm_committed_as_batch according to vm overcommit policy
2020-08-07 11:33:26 -07:00
mmap.c
mm/mmap: undo ->mmap() when arch_validate_flags() fails
2022-10-26 13:25:11 +02:00
mmu_gather.c
mm/khugepaged: fix GUP-fast interaction by sending IPI
2022-12-14 11:31:55 +01:00
mmu_notifier.c
mm/mmu_notifier.c: fix race in mmu_interval_notifier_remove()
2022-04-27 13:53:54 +02:00
mmzone.c
arm: remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL
2022-05-15 20:00:09 +02:00
mprotect.c
mm: don't try to NUMA-migrate COW pages that have other uses
2022-02-23 12:00:57 +01:00
mremap.c
mm/mremap: hold the rmap lock in write mode when moving page table entries.
2022-08-21 15:15:21 +02:00
msync.c
mmap locking API: use coccinelle to convert mmap_sem rwsem call sites
2020-06-09 09:39:14 -07:00
nommu.c
mm: remove alloc_vm_area
2020-10-18 09:27:10 -07:00
oom_kill.c
oom_kill.c: futex: delay the OOM reaper to allow time for proper futex cleanup
2022-04-27 13:53:54 +02:00
page_alloc.c
mm/page_alloc: correct start page when guard page debug is enabled
2023-11-08 17:30:41 +01:00
page_counter.c
mm/page_counter: correct the obsolete func name in the comment of page_counter_try_charge()
2020-10-13 18:38:30 -07:00
page_ext.c
…
page_idle.c
mm/page_idle.c: skip offline pages
2020-06-08 11:05:55 -07:00
page_io.c
mm: fix unexpected zeroed page mapping with zram swap
2022-04-20 09:23:25 +02:00
page_isolation.c
mm: rename page_order() to buddy_order()
2020-10-16 11:11:19 -07:00
page_owner.c
mm: rename page_order() to buddy_order()
2020-10-16 11:11:19 -07:00
page_poison.c
mm/page_poison.c: replace bool variable with static key
2020-10-16 11:11:17 -07:00
page_reporting.c
mm: rename page_order() to buddy_order()
2020-10-16 11:11:19 -07:00
page_reporting.h
mm: introduce include/linux/pgtable.h
2020-06-09 09:39:13 -07:00
page_vma_mapped.c
mm/thp: another PVMW_SYNC fix in page_vma_mapped_walk()
2021-06-30 08:47:29 -04:00
page-writeback.c
mm: make wait_on_page_writeback() wait for multiple pending writebacks
2021-01-12 20:18:22 +01:00
pagewalk.c
mm: pagewalk: Fix race between unmap and page walker
2022-09-08 11:11:38 +02:00
percpu-internal.h
percpu: make pcpu_nr_empty_pop_pages per chunk type
2021-04-14 08:42:03 +02:00
percpu-km.c
mm: memcg/percpu: account percpu memory to memory cgroups
2020-08-12 10:57:55 -07:00
percpu-stats.c
percpu: make pcpu_nr_empty_pop_pages per chunk type
2021-04-14 08:42:03 +02:00
percpu-vm.c
mm: memcg/percpu: account percpu memory to memory cgroups
2020-08-12 10:57:55 -07:00
percpu.c
percpu: make pcpu_nr_empty_pop_pages per chunk type
2021-04-14 08:42:03 +02:00
pgalloc-track.h
mm: move p?d_alloc_track to separate header file
2020-08-07 11:33:26 -07:00
pgtable-generic.c
mm/thp: fix __split_huge_pmd_locked() on shmem migration entry
2021-06-30 08:47:26 -04:00
process_vm_access.c
mm/process_vm_access.c: include compat.h
2021-01-19 18:27:21 +01:00
ptdump.c
mm: pagewalk: Fix race between unmap and page walker
2022-09-08 11:11:38 +02:00
readahead.c
vfs: fix readahead(2) on block devices
2023-11-20 11:06:44 +01:00
rmap.c
mm/rmap: Fix anon_vma->degree ambiguity leading to double-reuse
2022-09-05 10:28:56 +02:00
rodata_test.c
mm/rodata_test.c: fix missing function declaration
2020-08-21 09:52:53 -07:00
shmem.c
tmpfs: verify {g,u}id mount options correctly
2023-09-19 12:20:06 +02:00
shuffle.c
mm: rename page_order() to buddy_order()
2020-10-16 11:11:19 -07:00
shuffle.h
mm/shuffle: remove dynamic reconfiguration
2020-08-07 11:33:29 -07:00
slab_common.c
mm/slub: fix redzoning for small allocations
2021-06-23 14:42:54 +02:00
slab.c
mm/sl?b.c: remove ctor argument from kmem_cache_flags
2021-05-14 09:50:45 +02:00
slab.h
mm: kmemleak: slob: respect SLAB_NOLEAKTRACE flag
2021-11-26 10:39:19 +01:00
slob.c
mm: memcg: convert vmstat slab counters to bytes
2020-08-07 11:33:24 -07:00
slub.c
mm/slub: fix to return errno if kmalloc() fails
2022-09-28 11:10:28 +02:00
sparse-vmemmap.c
mm/sparse: only sub-section aligned range would be populated
2020-08-07 11:33:27 -07:00
sparse.c
mm/sparse: add the missing sparse_buffer_fini() in error branch
2021-05-14 09:50:45 +02:00
swap_cgroup.c
mm: memcontrol: make swap tracking an integral part of memory control
2020-06-03 20:09:48 -07:00
swap_slots.c
mm/swap_slots.c: remove always zero and unused return value of enable_swap_slots_cache()
2020-10-13 18:38:30 -07:00
swap_state.c
mm: swap: get rid of livelock in swapin readahead
2022-03-23 09:13:27 +01:00
swap.c
mm: move call to compound_head() in release_pages()
2020-10-13 18:38:33 -07:00
swapfile.c
mm/swap: fix swap_info_struct race between swapoff and get_swap_pages()
2023-04-20 12:10:24 +02:00
truncate.c
mm/thp: unmap_mapping_page() to fix THP truncate_cleanup_page()
2021-06-30 08:47:27 -04:00
usercopy.c
mm/usercopy: return 1 from hardened_usercopy __setup() handler
2022-04-08 14:40:43 +02:00
userfaultfd.c
mm: userfaultfd: fix missing cache flush in mcopy_atomic_pte() and __mcopy_atomic()
2022-05-15 20:00:09 +02:00
util.c
mm: Add kvrealloc()
2022-08-21 15:15:21 +02:00
vmacache.c
kernel: better document the use_mm/unuse_mm API contract
2020-06-10 19:14:18 -07:00
vmalloc.c
mm: add a call to flush_cache_vmap() in vmap_pfn()
2023-08-30 16:23:14 +02:00
vmpressure.c
…
vmscan.c
mm: vmscan: fix extreme overreclaim and swap floods
2022-12-02 17:40:04 +01:00
vmstat.c
arm: remove CONFIG_ARCH_HAS_HOLES_MEMORYMODEL
2022-05-15 20:00:09 +02:00
workingset.c
XArray updates for 5.9
2020-10-20 14:39:37 -07:00
z3fold.c
mm/z3fold: use release_z3fold_page_locked() to release locked z3fold page
2021-07-14 16:56:51 +02:00
zbud.c
mm/zbud: remove redundant initialization
2020-10-13 18:38:34 -07:00
zpool.c
mm/zpool.c: delete duplicated word and fix grammar
2020-08-12 10:57:58 -07:00
zsmalloc.c
zsmalloc: fix races between asynchronous zspage free and page migration
2022-06-06 08:42:43 +02:00
zswap.c
…